Undercarriage Parts Sprocket Segment Used on Komatsu D85 Bulldozer
Our Komatsu D85 sprocket segments are built to perform in high-impact, high-torque conditions. Precision forged and heat-treated, these segments ensure smooth track engagement and long-term wear resistance in tough dozing environments.
| Material | 50Mn/40MnB |
|---|---|
| Surface Hardness | HRC53-58,deepth: 8-12mm |
| Colors | Black or yellow or customized |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
The sprocket segment is a key component of the final drive system in the Komatsu D85 bulldozer. It engages directly with the track links to convert engine torque into forward or reverse movement.
Mounted on the drive hub, the D85 sprocket segment ensures:
- Smooth engagement with the track links
- Accurate power transmission under heavy loads
- Stable track motion, minimizing vibration and chain misalignment
- Efficient dozing performance, especially during climbing, pushing, or ripping
Without a high-quality sprocket segment, track slippage, premature wear, and power loss can occur—leading to more downtime and costly repairs.
Material & Heat Treatment Process
To withstand the intense force and friction of bulldozing work, our D85 sprocket segments are manufactured using:
- High-carbon alloy steel such as 35SiMn or 40Mn2
- Precision forging or casting, depending on customer requirement
- Full-surface quenching, achieving HRC 50–56 hardness
- A tough inner core that absorbs impact without cracking
These processes ensure high surface hardness for wear resistance and core ductility to avoid brittle failure.
Tooth Rough Machining
The sprocket blank is machined on a CNC lathe or gear hobbing machine to form the basic tooth profile.
Precision Machining
The inner ring is inserted and the entire part is precisely machined to ensure concentricity and dimensional accuracy.
Drilling
Mounting and lubrication holes are drilled to meet the installation and functional requirements.
Tooth Grinding & Finishing
After heat treatment, the sprocket teeth are ground or polished to remove burrs and ensure smooth engagement.
Surface Cleaning
The sprocket undergoes surface cleaning, removing scale and residue, preparing it for surface treatment.
Painting & Final Coating
The sprocket is coated with durable industrial paint (available in various colors), providing corrosion resistance and a clean, professional appearance.
OEM Undercarriage Parts for Komatsu
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| KOMATSU | D20 | D21 | D31 | D37 | D39 | D41 | D50 | D53 |
| D55 | D57 | D60 | D61 | D65 | D68 | D75 | D80 | |
| D85 | D85A-12 | D87 | D90 | D95 | D135 | D155 | D155A-1 | |
| D155A-2 | D155A-3 | D155A-5 | D155AX-6 | D155AX-7 | D275 | D275A-2 | D275AX-5 | |
| D275AX-5EO | D355 | D355A-3 | D375A-2 | D375A-3 | D375A-5 | D375A-6 | D375A-8 | |
| D475A-2 | D475A-3 | D475A-5 | D475A-8 | D475A-8EO | D575A | D575A-2 | D575A-3 | |
| D65EX-12 | D65PX-12 | D61EX-15 | D61PX-15 | D61EX-24 | D61PX-24 | D37EX-21 | D37PX-21 | |
| D39EX-21 | D39PX-21 | D39EX-24 | D39PX-24 | D51EX-22 | D51PX-22 | D51EX-24 | D51PX-24 | |
| D85EX-15E0 | D85PX-15E0 | D85EX-18 | D85PX-18 | D155AX-8 | D155AXi-8 | D375A-8EO | D475A-8EO | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Compatibility & Replacement Fit
These sprocket segments are precision-machined to fit:
- Komatsu D85, including D85A, D85P, and D85E series
- Compatible with D85-18, D85-21, D85ESS-2, and D85EX/PX-15, D85EX-18 depending on undercarriage setup
Common OEM Reference Numbers:
- 14X-27-15121
- 154-27-71630
- 14X-27-15112
- 14X-27-77110
If you’re unsure about your model or part number, send us your machine serial number, chassis drawing, or photos of the current sprocket — our team will quickly verify the match.
Key Structural Features
- Split-type segments for easy mounting without track removal
- Self-cleaning tooth profile to prevent mud build-up
- Perfect pitch engagement for Komatsu chains, ensuring minimal backlash
- Bolt-hole positions precisely machined to OEM standard tolerance
- This makes installation fast and trouble-free—whether you're replacing one segment or the full sprocket ring.
Built for Tough Working Conditions
Our D85 sprocket segments are tested to endure:
- Abrasive mining soil
- Dense clay in agricultural or landfill work
- Sloped terrain requiring frequent braking and turning
- Continuous heavy-duty operations in quarrying or forestry
They maintain tooth profile integrity even under constant shock loads, reducing the risk of tooth breakage or wear deformation.
Why Choose Us for D85 Sprocket Segments?
- OEM-Grade Precision – Manufactured to exact Komatsu specs
- Long Wear Life – Hardened teeth with high impact strength
- Fast Delivery – Stock ready for urgent orders
- Branding Support – OEM/ODM services with custom packaging
- Technical Assistance – Our experts help ensure fitment and installation success
- Global Reach – Exported to 30+ countries with long-term dealer cooperation
FAQ – Frequently Asked Questions
Q: Do I need to change the full set or only damaged segments?
A: It’s recommended to change all segments together to ensure even track wear and load balance.
Q: Can you include bolts or hardware?
A: Yes. Please mention during inquiry—we can include bolt kits as needed.
Q: How do I confirm fitment for my D85 model?
A: Send us your serial number, or a photo of the current segment—our team will respond with the correct match in 12 hours.
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
